We ReAct.

We bring the digital future to you today

Hamburger Ideenschmiede Responsive Acoustics GmbH (ReAct) was founded in 2014. Our vision: to revolutionise acoustic staging and communication at the point of sale and to make stationary retail fit for the future.

For many years, the founders have occupied themselves scientifically and professionally with the psychological effect of sound and have identified acoustic patterns that can be used to give targeted support to the consumer behaviour of customers on sales floors.

Patrick Langeslag

Patrick Langeslag

Managing Director, Finance and Analytics

Master of International Business Management and Economics. Operations manager and managing director at an investment company: development of investment operations including marketing, sales and certified quality management systems. Managing partner at the acg audio consulting group, a management consultancy for brand management. Provision of strategic advice to customers and active cooperation with universities.


Manuel Tessloff

Manuel Tessloff

Head of Development

Programmer and Media Manager. Information Technology studies at Universität Hamburg. Management of the audio department of the Ponton European Media Art Lab in Hamburg. Co-foundation and management of HIFIND Systems AG, a company for automated music recommendations, until 2002. Executive VP at EMI Music Publishing Europe until 2012, responsible for aspects including the implementation of EMI’s global customer-focused web portals.


wildert Hirsch

Wilbert Hirsch

Head of Content

Film music composer, managing director and owner of complete audio GmbH, partner of the acg audio consulting group, a management consultancy for strategic acoustic brand management. Creative Supervisor and CEO of audio consulting group Inc., New York.


Responsive-Acoustics Acoustic Responsive Einzelhandel Kommunikation Klang Klangfläche

Thomas Baule

Head of Sales

Sales professional and business developer, construction engineering studies at Leibniz Universität Hannover, bricklayer by trade. Setup of two companies as managing partner. Consulting and presentation activities on the topics of business development, internet marketing, digital transition and change management.


Our service


We offer tailored product solutions for your specific needs and are happy to advise you.


We expand and improve our product range constantly with regular software updates.


Our installation team integrates our products into your store for you and sets them up.

Customised adaptation

Special adaptations, such as special announcements or soundscapes, are also possible.


Find out how you and your staff can use our products correctly in training conducted at your store.


If you have any questions, you can reach us by telephone or e-mail. We are happy to help you.